Lightning Dust was a pony of pride. She was a pony of action and was destined for great deeds. She would never let anything stop her from this destiny. Sadly, that very attitude had seemed to dash it all away.
A second chance doesn't come for everyone, but on this day, it came for Lightning Dust.
The Shadowbolts; A new flight team in the name of Luna, Princess of the Night. With their first exhibition completed in Cloudsdale, they had hoped to get a few star recruits to fill out the team. They weren't expecting to get Lightning Dust.

Ruby Moon arrives in Canterlot looking for a quality education. She finds ancient spirits, haunting dreams, and more magic than she ever expected.
Princess Luna was looking for a student. She confronts an unknown part of her disturbing past, and learns of a link to the origin of magic.
An unknown unseen force wants something from Ruby, and mysterious events fill the castle, apparently linked to Ruby's dreams. Princess Celestia is concerned, but agrees when Luna decides to handle them alone but her new student.